1. Directive 2002/91/EC, Energy Performance of Building Directive;European Commission,2002
2. Green paper on Energy Efficiency or Doing More With Less;European Commission,2005
3. Directive 2010/31/EU, Energy Performance of Building Directive;European Commission,2010
4. Ecofys, Cost-Effective Climate Protection in the EU Building Stock, Report for EURIMA, 2005.
5. Commission Delegated Regulation (EU) No. 244/2012;European Commission,2012